Portable window-platform.



No. 638,516. Patented Dec. 5, I899.

J KBAGEL PORTABLE WINDOW PLATFORM.

(Apphcat u fll d July 24 1899) (No Model.)

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JOHN KRAGEL, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO FRANK HESS, OF SAME PLACE.

PORTABLE WINDOW-PLATFORM.

SPECIFICATION forming part of Letters Patent No. 638,516, dated December 5, 1899.

Application filed July 24, 1899. Serial NE 724,916. (No model.)

.To (0 whom it may concern:

Be it known that I, JOHN KRAGEL, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Portable IVindow-Platforms; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

My invention relates to a novel construction in a portable Window-platform adapted to be used for cleaning the outer surfaces of window-panes, the object being to provide a r 5 simple and safe device of this character which can be easily mounted and removed; and it consists in the features of construction and combinations of parts hereinafter fully described and claimed.

In the accompanying drawings, illustrating my invention, Figure 1 is a perspective view of a window-frame,showing my device mounted thereon. Fig. 2 is a detail sectional view on the line 2 2 of Fig. 1. Fig. 3 is a detail sectional view on the line 3 3 of Fig. 1.

Referring now to said drawings, A indicates a bar or beam, upon one end of which a sleeve 13 is rigidly mounted and upon which another sleeve C is longitudinally movable.

0 Each of said sleeves B and C carries a brace D, pivotally secured thereto, said braces D each comprising a rod bent to form a horizontal arm turned over at its free end, as at E, to engage the inner face of one of the guide- 5 strips F of the sash-frame and having a vertical portion passing through a sleeve on said sleeve B orC, and below said vertical portion bent to extend slightly beneath the said sleeve B or C, and thence at a downward incline to form a supporting-arm adapted to rest upon the stone sill G, and provided at its end with an upwardly-extendin g projection H,adapted to abut against the wood sill I. A hook J is secured in the guide-strip F, in which the horizontal arm of said brace D is adapted to rest to prevent same from moving inwardly,

and thus disengaging said bent end E. By means of said sleeve C said device can be adjusted to fit windows of various widths.

A platform K, having crank-arms L pivotally secured to its lower face, is adapted to be hung from said bar A by means of the hooked ends M of said arms L, which engage said bar A, the inner end of said platform being supported upon said stone sill Gr, said arms L being adapted to project beyond the inner edge of said platform and to abut against the wood sill I. Said crank-arms L are provided with collars N, adapted to enter grooves in the lower face of said platform K to hold said arms against longitudinal movement.

My device is light and strong and easily mounted and removed and when removed can be neatly folded to occupy small space.

I claim as my invention 1. In a portable window-platform, the combination with a bar having braces pivotally mounted thereon each having two arms adapted respectively to engage guide-strips and to abut against a wood sill, of a platform carrying crank-arms having books at their free ends adapted to engage said bar, said platform being adapted to be supported upon the stone sill at its inner end.

2. In a portable window-platform, the combination with a bar having a rigid sleeve at one end, and a sleeve movably' mounted thereon, and braces pivotally mounted on said sleeves, said braces having two arms each, adapted respectively to engage guide strips of the sash-frame, and to abut against the wood sill, of a platform carrying crankarms provided with hooks at their free ends adapted to engage said bar, said platform being supported at its inner end upon the stone sill of the window.

3. In a portable window-platform, the com bination with a bar having a rigid sleeve at one end, and a sleeve movably mounted 9o thereon, and braces pivotally mounted on said sleeve, said braces having two arms each,

adapted respectively to engage guide-strips gage said bar to support said platform at its IO of the sash-frame, and to abut against the outer end.

wood sill, and hooks in said guide strips In testimony whereof I affix my signature adapted to engage said first-named arms to in presence of two Witnesses.

prevent the latter from moving out of en gagement With said guide-strips, of a platform 1 JOHN KRAGEL' adapted to be supported at its inner end upon i WVitnesses:

the window-sill, and carrying crank-arms havl E. F. WILSON, ing hooks at their free ends adapted to en- RUDOLPH WM. LOTZ. 

